Legionella bacteria, which causes the sometimes-deadly Legionnaire’s disease, has been detected in the plumbing system of an Upper East Side apartment complex known as the The Cherokee. ( Photo: Wikimedia Commons ) Health Dept.: UES Co-op Building Has Legionella in Plumbing Legionella bacteria has officially been detected in the plumbing system of an Upper East Side co-op, after NYC Health Department... News 11 Feb 2026 | 05:36